Three Vouchers & Cashback 2021

Updated July 23, 2021
Getting the best mobile, broadband and SIM plan for your home and handsets is easy with Three! Browse our Three vouchers and Three discount codes for extra savings.
Cashback Rates
£55 cashback
for mobile broadband SIM 24 month plans with 2GB, 5GB, or 10GB of data
10 uses today
£16.50 cashback
for Pay As You Go Handsets
1 use today
£66 cashback
for the unlimited data 12 month SIM plan for £18 per month
1 use today
£77 cashback
for Huawei AI Cube with unlimited data on a 24 month contract for £25 per month
£55 cashback
for mobile broadband SIM 12 month plans with 1GB - 20GB of data
£16.50 cashback
for mobile broadband SIM 1 month plans with 2GB - 100GB of data
£66 cashback
for Huawei B535 mobile broadband device with unlimited data, 24 month contract for £22 per month
£77 cashback
for Huawei AI Cube with unlimited data on a 12 month contract for £32 per month and £49 upfront
£66 cashback
for Huawei B535 mobile broadband device with unlimited data, 12 month contract for £27 per month and £29 upfront
£71.50 cashback
for contract handset on-site offers
£33 cashback
for 12GB for £8 12 month SIM plan
£33 cashback
for the 8GB data 12 month SIM plan for £8 per month
£22 cashback
for the 1GB data 12 month SIM plan for £5 per month
£27.50 cashback
for 4GB for £6 12 month SIM plan
£66 cashback
for the 30GB data 12 month SIM plan for £15 per month
£16.50 cashback
for the unlimited 1 month SIM plan for £24 per month
£74.25 cashback
iPhone 12 mini 100GB data, £19 upfront cost and £42 monthly
£74.25 cashback
iPhone 12 100GB data, £29 upfront cost and £45 monthly
£74.25 cashback
iPhone 12 Pro 100GB data, £49 upfront cost and £55 monthly
£74.25 cashback
iPhone 12 Pro Max with 100GB data, £79 upfront cost and £59 monthly
£74.25 cashback
for Samsung Galaxy S20, 100GB data, £29 upfront cost and £32 monthly
£74.25 cashback
for Samsung Galaxy S20, 100GB data, £29 upfront cost and £38 monthly
£74.25 cashback
for Samsung Galaxy S20 5G, 100GB data, £29 upfront cost with £36 monthly
£74.25 cashback
for Samsung Galaxy S20+ 5G, 100GB data, £49 upfront cost and £43 monthly
£74.25 cashback
for Samsung Galaxy A51, 100GB data, £19 upfront cost and £23 monthly
£74.25 cashback
for Apple iPhone SE, 30GB data, £19 upfront cost and £29 monthly
£74.25 cashback
for Samsung Galaxy A71, 100GB data, £29 upfront cost and £27 monthly
£74.25 cashback
for Huawei P30 Pro, 100GB data, £29 upfront cost and £29 monthly
£74.25 cashback
for Apple iPhone 11 Pro, 100GB data, £49 upfront cost and £49 monthly
£74.25 cashback
for Apple iPhone SE, 100GB data, £29 upfront cost and £29 monthly
£74.25 cashback
for OnePlus 8, 100GB data, £29 upfront cost and £39 monthly
£74.25 cashback
for OnePlus 8 Pro, 100GB data, £39 upfront cost and £49 monthly
£74.25 cashback
for OnePlus Nord, 100GB data, £29 upfront cost and £34 monthly
£55 cashback
for Apple iPad 7th Generation, 100GB data, 24 month contract for £39 per month with £49 upfront cost
£55 cashback
for Samsung Galaxy Tab A 10.1 2019, 100GB data, 24 month contract for £27 per month
£66 cashback
for the Huawei 4G Mobile WiFi with unlimited data for £22 per month
£55 cashback
for Huawei E5573bs-322 4G Mobile Wi-Fi, 40GB data, 24 month contract for £13 per month
£55 cashback
for Huawei MediaPad T5, 100GB data, 24 month contract for £25 per month
£55 cashback
for Apple iPad Pro 11, 40GB data, 24 month contract for £48 per month with £49 upfront cost

£18
42 uses today

£18 for this unlimited data SIM on a 24 month advanced plan

£18
42 uses today

£18 for this unlimited data SIM on a 24 month advanced plan

50%
OFF
20 uses today

Student Discount: Free gifts plus 50% off select plans for 6 months

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!
50% Off
20 uses today

Student Discount: Free gifts plus 50% off select plans for 6 months

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!

50%
OFF
30 uses today

SIMS plan for your phone now 50% off (from £5 monthly)

50% Off
30 uses today

SIMS plan for your phone now 50% off (from £5 monthly)

50%
OFF
15 uses today

Existing Customer Offers: Plans and devices for up to 50% in savings (prices from £5)

50% Off
15 uses today

Existing Customer Offers: Plans and devices for up to 50% in savings (prices from £5)

£14
7 uses today

30GB Sim Only offer for £14 per month for 24 months

£14
7 uses today

30GB Sim Only offer for £14 per month for 24 months

FROM
£5
4 uses today

Data boosts from £5

From £5
4 uses today

Data boosts from £5

£80
OFF
6 uses today

Up to £80 cash reward when you Refer a Friend

Get Deal
£80 Off
6 uses today

Up to £80 cash reward when you Refer a Friend

FREE
UPGRADE
3 uses today

Get 200MB of free data every month with the free Data Reward SIM card

Free Upgrade
3 uses today

Get 200MB of free data every month with the free Data Reward SIM card

£100
OFF
7 uses today

Samsung S20 FE 5G 64Gb for £100 off

Pick up this phone and get a 24-month plan, unlimited minutes and texts for £40 a month (£100 off).
£100 Off
7 uses today

Samsung S20 FE 5G 64Gb for £100 off

Pick up this phone and get a 24-month plan, unlimited minutes and texts for £40 a month (£100 off).

£29
3 uses today

5G Hub Broadband for £29 monthly

£29
3 uses today

5G Hub Broadband for £29 monthly

FROM
£15
4 uses today

Mobile phone deals starting as low as £15 per month

From £15
4 uses today

Mobile phone deals starting as low as £15 per month

£1
OFF
2 uses today

Over £1 in savings with the Price Promise

If you find a better deal for your business contract, Three will beat it by at least £1 a month with the Price Promise!
£1 Off
2 uses today

Over £1 in savings with the Price Promise

If you find a better deal for your business contract, Three will beat it by at least £1 a month with the Price Promise!

20%
OFF
3 uses today

20% off broadband deals with the student discount

20% Off
3 uses today

20% off broadband deals with the student discount

FROM
£23
2 uses today

Broadband internet from £23 a month

From £23
2 uses today

Broadband internet from £23 a month

FROM
£29
2 uses today

Get Apple AirTag from £29

Never lose your things again! Use AirTag along with Find my iPhone to locate anytime you lose your important items.
From £29
2 uses today

Get Apple AirTag from £29

Never lose your things again! Use AirTag along with Find my iPhone to locate anytime you lose your important items.

FROM
£61.99
4 uses today

Pay as you go phones from £61.99

From £61.99
4 uses today

Pay as you go phones from £61.99

DOUBLE DATA
3 uses today

Over 2X the data on select tablets

Double Data
3 uses today

Over 2X the data on select tablets

FREE
DELIVERY
2 uses today

Free delivery on all devices

Free Delivery
2 uses today

Free delivery on all devices

FREE
SIM
4 uses today

Free Pay As You Go SIM delivered in a few days

Free SIM
4 uses today

Free Pay As You Go SIM delivered in a few days

FROM
£15
2 uses today

Charging pads, cases, portable speakers and more accessories from £15

From £15
2 uses today

Charging pads, cases, portable speakers and more accessories from £15

FREE
APP
2 uses today

Download the Three app for free

Free App
2 uses today

Download the Three app for free

Tons Of Easy Savings

Looking for an additional plan or device as an existing customer? They have plenty of awesome Three deals to help you out. Add an extra SIM or device to your existing account or complete a Three upgrade to a shiny new phone in just a few clicks by browsing their “Offers” page online. We’ll also post all of the best Three vouchers and upcoming Three sales right here so you don’t miss out!

If you’re a student on a tight budget, you’re in luck. With their exclusive Three discounts for students, you can get your next phone, SIM, or broadband purchase for less. Just enter your university email address to access a wide range of specials just for students. Whether you’re looking for a 1-month or 12-month SIM plan, they’re undoubtedly the best choice for you.

Downloading Discounts

With the Three app for iOS and Android, anything is possible. From tracking your latest bill and usage to completing your next Three top-up, in just a few taps, the whole world can be yours. Now you can manage your account on the move; some features include viewing your Pay As You Go credit balance, bill breakdowns, check your upgrade eligibility, and you can even browse the latest Three UK deals to see what’s new. Plus, if you need support from the Three contact team, live chat is always available for your convenience from your device.

Easy Deliveries

They always offer free, next working day delivery on all new purchases when you join! Enjoy this offer on phones, tablets, and MiFi that are ordered before 4 PM for delivery to your billing address. If you upgraded your phone online or over the phone, your new device will be delivered on their chosen date, and you will be charged £4.99 on your next bill— make sure you use a Three discount code or one of our Three voucher codes to save on this fee! If you’re still unsure about making the switch, just read a Three network review to see why customers choose them as their #1 network provider.

Popular Expired Three Discount Codes
50% Off
2 uses today

Extra 50% off SIM Only plan with unlimited data fo the first 6 months

Save half price right now with this Three SIM Only offer!

FREE
DELIVERY
2 uses today

Free Delivery
2 uses today

Free delivery on all your orders

£18
2 uses today

100GB for £18 per month with this SIM Only Offer

Catch this Three SIM Only deal and get 100GB for £18!

FAQs with


How do you get the best discount at Three?

The best discounts, deals, and voucher codes can always be found right here at Quidco! You can also browse their exclusive customer offers page, join their mailing list for news about upcoming sales, and choose one of their plan bundles to cut down the cost of your next device!


Does Three do a student discount?

You don't have to sacrifice great cell service when you're on a tight student budget! With a valid academic ID, you can enjoy six months of service at half-price, as well as a free explorer backpack and wireless headphones. Just head to their website for more information on how to save!